trap·​e·​zoid ˈtra-pə-ˌzȯid How to pronounce trapezoid (audio)
: a quadrilateral having only two sides parallel
British : trapezium sense 1a
: a bone in the wrist at the base of the metacarpal of the index finger
trapezoidal adjective

Illustration of trapezoid

Illustration of trapezoid
  • trapezoid 1a

Example Sentences

Recent Examples on the Web The teacher was a young, floppy-haired man shaped like an upside-down trapezoid. E. Tammy Kim, The New Yorker, 6 Jan. 2023 The bottle is a tall trapezoid, featuring crisp lines and a golden semicircle at the top. Dallas News, 30 Nov. 2022 When folded up, the prop arms form a trapezoid around the drone’s central core. Carl Engelking, Discover Magazine, 20 May 2015 It’s the big city sister of his ladylike Ana bag that is shaped like a dainty little trapezoid. Liana Satenstein, Vogue, 11 Oct. 2022 At the top corners of the trapezoid, sew ribbons for ties. Terri Robertson, Country Living, 22 Aug. 2022 At the top corner of the trapezoid, sew a corresponding color ribbon for ties. Terri Robertson, Country Living, 18 Aug. 2022 There is a craze for the long-but-short denim piece that covers the leg like a trapezoid! Liana Satenstein, Vogue, 22 July 2022 The shape of the State House-- not a rectangle but a trapezoid -- was one of the findings Derry explained during her presentation. Mike Cason |, al, 18 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trapezoid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


New Latin trapezoïdes, from Greek trapezoeidēs trapezium-shaped, from trapeza table

First Known Use

circa 1706, in the meaning defined at sense 1b

Time Traveler
The first known use of trapezoid was circa 1706

Dictionary Entries Near trapezoid

Cite this Entry

“Trapezoid.” Dictionary, Merriam-Webster, Accessed 28 Jan. 2023.

Kids Definition


trap·​e·​zoid ˈtrap-ə-ˌzȯid How to pronounce trapezoid (audio)
: a polygon that has four sides and exactly two that are parallel
trapezoidal adjective

Medical Definition


trap·​e·​zoid ˈtrap-ə-ˌzȯid How to pronounce trapezoid (audio)
: a bone in the distal row of the carpus at the base of the index finger

called also lesser multangular, trapezoid bone, trapezoideum

More from Merriam-Webster on trapezoid

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